it was not until

Meanings

1. 1phrasefixed phrase

   Used to say that something did not happen before a particular time or event.

   Grammar: The clause after 'until' often uses 'that' or no word at all: It was not until 1990 that she left.

   Patterns

   • it was not until + time/event + that + clause
   • it was not until + time/event + before + clause

   It was not until midnight that the rain finally stopped.

   It was not until she read the letter twice that she understood it.

   It was not until the 1960s that most homes had a telephone.

2. 2phrasefixed phraseformal

   Used to emphasize how late or delayed an action or event was.

   Grammar: Often followed by 'that' plus a full clause; the main verb stays in the positive.

   Patterns

   • it was not until later that + clause

   It was not until later that we learned the truth.

   It was not until much later that the mistake was noticed.

Common combinations

it was not until then

It was not until then that I realized he had been right.

it was not until recently

It was not until recently that scientists found an answer.

it was not until later

It was not until later that the damage became clear.

it was not until after the war

It was not until after the war that the city was rebuilt.

Synonyms and how they differ

only when

Focuses on the single condition, not on the delay: 'Only when she arrived did we start.'

Word family

until preposition

Up to a particular time; the key word inside this phrase.

Commonly confused: it was not until or it was until?

Practice

Make it your own

Write a sentence using “it was not until”, then check it and compare it with the examples above.

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